Subgroup PDPs.
Recently, a new research direction concentrates on finding more reliable PDP estimates within subgroups of observations. [1]} focused on problems in PDP estimation with correlated features. To that end, they apply transformation trees to find homogeneous subgroups and then visualize a PDP for each subgroup. [2]} looked at the same problem and also uses subgroup PDPs, where ICE curves are grouped regarding a correlated feature. [3]} applied a clustering approach to group ICE curves to find interactions between features.
However, none of these approaches aim at finding subgroups where reliable PDP estimates have low uncertainty.
Additionally, to the best of our knowledge, nothing similar exists for analyzing experimental data created by HPO.
